JPH10205148A - Method of electing bathroom and structure of bathroom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of electing a bathroom incorporating an excellent function owned by a unit bath and a freedom in design of a bathroom elected by a conventional process, and a bathroom structure. SOLUTION: A method of electing a bathroom, is composed of the steps of laying a water-proof pan 2 in the under-floor structure part of a building, forming a deck 3 and the interior of the bathroom, and setting a bathtub. The water-proof pan 2 is made prefabricated RFP on the basis of a planar plan of the bathroom. Further, in order to form the water-proof pan 2, the pan 2 which has been once fabricated is split into two parts in its plan view, and then two parts are joined together so as to reform the pan.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a bathroom and a bathroom structure, and more particularly to a method of constructing a bathroom having a waterproof function equivalent to that of a unit bath and capable of being constructed in a free form. The present invention relates to a bathroom structure constructed by the method.

[0002]

2. Description of the Related Art A unit bath constructed by combining molded members has superior waterproofing and heat insulating performance as compared with a bathroom by a conventional construction method, and due to an improved design, not only an apartment house but also a wooden house. It is becoming widespread in the field of architecture.

As is well known, the unit bath is composed of waterproof pans including a bathtub pan and a washbasin pan, members such as a bathtub and a deck, water supply / drainage facilities, and interior members constituting a bathroom space such as walls and ceilings. The required members formed by the above are constructed on site. The advantages of the unit bath are as follows: (a) The waterproof pan is laid on the floor of the bathroom, so that the waterproofness is high and there is no water leakage under the floor. (B) The building can be constructed by so-called dry construction, which does not require mortar construction or asphalt waterproofing and other ground foundation construction. Therefore, the construction period is short, and even a wooden building is installed on the upper floor. And the like.

[0004]

However, the above-mentioned unit bath is, for example, a conventional construction method in which the plan shape of the bathroom is designed to a desired shape in accordance with the floor plan or the size of the bathroom is freely designed. It does not have the freedom to design like a bathroom. Specifically, since unit baths are standardized as components of mass-produced members, the bathroom is usually designed to have a square planar shape, and in fact, it can be freely designed according to the layout of the living room, etc. It is difficult to make changes such as providing In addition, selection of bathtubs and interior materials is limited. Furthermore, since the unit bus is premised on mass production, it is not actually designed to have a floor area of, for example, 5 m ² or more.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bathroom construction method and a bathroom structure having both the excellent function of a unit bath and the degree of freedom of design in a bathroom of a conventional construction method. Is to provide. That is, the object of the present invention is (a) a bathroom having excellent waterproof reliability and can be constructed by dry construction, (b) even a wooden building can be constructed on the upper floor, and (c) The present invention provides a bathroom construction method that can be constructed in a free form and a free size, and a bathroom structure constructed by the construction method.

[0006]

In order to solve the above-mentioned problems, a method for installing a bathroom according to the present invention comprises a step of installing a waterproof pan in a underfloor structure of a building; A method of constructing a bathroom including a step of installing a bathtub, wherein a waterproof pan made of FRP preformed based on a plan of the bathroom is used as the waterproof pan.

[0007] In the above-mentioned construction method, in order to make the waterproof pan more easily and without being limited in size,
In forming the waterproof pan, after the formed bread is divided into two or more in its planar shape, each divided member is substantially butted to the initial state, and then, of both members butted, By applying a release tape along the divided edges and hand lay-up molding along the divided edges of both members,
Preferably, an integral connection is formed along the divided edge of the other member. In addition, in order to make it easier to adjust the dimensions of the waterproof pan with respect to the building, in molding the waterproof pan, when abutting each divided member to the initial state, a gap of 1 to 10 mm is provided between both members. It is good to provide.

In each of the above embodiments, in order to more easily adapt the waterproof pan to the shape of the bathroom, when forming the waterproof pan, a flat bottom plate constituting the bottom of the waterproof pan is formed. Preferably, the peripheral edge of the waterproof pan is formed by hand lay-up molding the side plate along the peripheral edge of the bottom plate.

In each of the above-mentioned embodiments, in order to enhance the heat insulation and waterproofness, a composite plate formed by laminating metal sheets on both sides of a synthetic resin sheet is used when installing the interior base of a bathroom. preferable. Further, from the viewpoint of enhancing heat insulation and waterproofness, it is preferable to use a composite plate formed by laminating metal sheets on both sides of a synthetic resin sheet when constructing an apron attached to the front of the bathtub.

The bathroom structure according to the present invention is characterized by being constructed by any of the construction methods described above, and the waterproof pan made of FRP preformed based on the floor plan of the bathroom is provided in the form of a floor substrate. In spite of this, the water stop function is surely exhibited, and the free construction inside the bathroom is enabled.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A bathroom construction method and a bathroom structure according to the present invention will be described with reference to the drawings. 1 to 6
It is a perspective view which shows the bathroom partially broken about the main process of the bathroom construction method which concerns on this invention, FIG. 1 is a figure which shows the foundation structure of the building before construction, FIG. FIG. 3, FIG. 3 is a view showing the construction of a wall plywood, FIG. 4 is a view showing the construction of a composite board for a wall foundation, FIG. 5 is a view showing the construction of a bathtub and an apron, and FIG. FIG. FIG. 7 is a longitudinal sectional view showing the arrangement of the waterproof pan and the connection between the waterproof pan and the wall. FIG. 8 is a perspective view showing a method of forming the waterproof pan, and FIG. 9 is a longitudinal sectional view showing a structure of a connection portion of the waterproof pan of FIG. FIG. 10 is a perspective view showing another embodiment of the method of forming the waterproof pan, and FIG. 11 is a longitudinal sectional view showing the structure of the peripheral portion of the waterproof pan of FIG.

As shown in FIGS. 1 to 6, the method for installing a bathroom according to the present invention comprises the steps of installing a waterproof pan (2) in a structure under the floor of a building and installing a deck (3) and interior of a bathroom. And installing a bathtub (5).
As the waterproof pan (2), a waterproof pan made of FRP preformed based on a plan of a bathroom is used.

In the present invention, as a first step, a waterproof pan (2) is installed on the underfloor structure including the foundation (10) and the base (11) of the building shown in FIG. 1 as shown in FIG. To build the bathroom floor (1). The underfloor structure may be provided with mortar construction or asphalt waterproofing, similar to the bathroom construction by the conventional construction method.However, a foundation with sufficient strength to support the bathroom facilities is constructed. Is enough. In the figure, reference numeral (9) indicates a window.

The waterproof pan (2) comprises, for example, two pans, a bathtub pan (20) and a washing pan (21), as also shown in FIG. The bath pan (20) and the washing pan (21) have a thickness of about 10 to 20 mm, and a rib (not shown) for preventing bending is formed on the back surface thereof. Rib width is about 20-40mm, height is about 80-12
0 mm, and the arrangement pitch of the ribs is 300 to 700 mm
Degree.

As shown in FIG. 2, the bathtub pan (20) is slightly wider than the bathtub (5) in plan view and is formed in accordance with the plan view of the place where the bathtub is placed. Further, the depth of the bathtub pan (20), that is, the rising height of the periphery of the bathtub pan (20), depends on the water blocking structure of the deck (3) and the apron (8) described later, and the dew condensation water on the outer surface of the bathtub pan (20). Is sufficient to store a small amount of water, such as 80
It is about 100 mm.

The washing pan (21) is, as shown in FIG.
It is formed according to the substantially planar shape of the washing place. The substantial planar shape of the washing place refers to a planar shape of an effective area excluding a portion limited by the layout of the bathroom and the arrangement of the bathtub (5), the deck (3), the counter, and the like. The depth of the washing pan (21), that is, the rising height of the periphery of the washing pan (21) is set in consideration of the drainage capacity from the drain trap and the amount of water discharged from the bathtub (5). , Usually about 50 to 120 mm.

The plan shape of the waterproof pan (2) must be adapted to the layout of the bathroom. That is, the waterproof pan (2) to be installed is previously FRP based on the floor plan of the bathroom.
Formed by The molding method of the waterproof pan (2) by FRP includes resin transfer molding (R)
TM molding method), cold press, hand lay-up (H
U molding method), and a molding method such as spray-up (SU molding method).

For example, the RTM molding method is a molding method in which a liquid resin is transferred after a reinforcing fiber preform is placed in a mold, and this is cured to form an FRP molded product.
In addition, the HU molding method uses either a male or female hand lay-up mold, applies a gel coat to the mold surface, cures it initially, and then attaches a reinforcing fiber mat to the hand lay-up roller. This is a molding method in which a laminating operation of applying a resin is repeatedly performed while defoaming, followed by curing in a curing furnace, followed by demolding. In addition, waterproof pan (2)
The above-mentioned rib on the back side can be usually provided in a state of being embedded in a resin by coating wood (square material) as a core material with a reinforcing fiber mat during molding.

In a preferred embodiment of the present invention, in forming the waterproof pan (2) as described above, as shown in FIG. 8, the molded pan is divided into two or more in its planar shape, and then divided into two or more. The separated members are substantially abutted to the initial state, and then a release tape is applied along the divided edge of one of the two members abutted, and the divided members are separated. By hand lay-up molding along the cut edge, an integrated connection (22) is formed along the divided edge of the other member.

Specifically, for example, a washing pan (21)
Is manufactured, first, the bread integrally molded by the above-described molding method is divided into three parts of a size convenient for transportation and construction, for example, bread constituent members (21a, 21b, 21c). The division processing is performed by a cutting device provided with a circular saw or a band saw. Next, the divided bread constituent members (21a, 21b, 21c) are arranged in an initial state before cutting. When butting the pan components (21a, 21b, 21c) to the initial state, a gap of 1 to 10 mm between both butting components, for example, the pan component (21b) and the pan component (21c). Should be provided. The gap having such a size substantially corresponds to a cutting margin when the waterproof pan is cut by the surface plate.

Subsequently, as shown in FIG. 9, a connecting portion (22) is formed along the butting portion of the pan components (21b, 21c) arranged in the initial state. In that case, the connecting portion (22) is formed without sticking to the one bread component (21c) and protruding from the other bread component (21b).
A release tape is stuck on the bottom side along the fore edge of c). Then, a flat backup jig is applied from the upper surface side, and a reinforcing fiber mat is applied in a strip shape from the bottom surface while overlaying to form a flat support portion (22d). When overlaying, the pan component (21
A band-like mat is set up along the set up edge of (b, 21c).

Next, a screw stopper (22f) is provided on the back surface of the formed support part (22d) as a back-up material for the rib and the fastening screw. Usually, a screw stop (2
The core material of 2f) is made of wood. Specifically, the screw portion (22f) attaches the core material (22f) to the support portion (22d).
e) by affixing the reinforcing fiber mat from the surface in a state where the core material (22) is in contact with the core material (22).
e).

That is, the waterproof pan (2) shown in FIGS. 8 and 9 has a divided structure so that it can be connected at the time of construction, and the connecting part (22) formed by the hand lay-up molding method is , Divided bread constituent members (21a,
21b, 21c) from the bottom side (22)
d) and a beam-shaped screwing portion (22f) attached to the back side of the support portion (22d) and screwed with wood as a core material (22f) for screwing one member during assembly. Have been. Then, both ends in the longitudinal direction of the connecting portion (22) are raised along the periphery of the bread in order to increase the water stoppage.

In order to install the waterproof pan (2), as shown in FIG. 7, the waterproof pan (2) is installed in the underfloor structure of the building using the base (11). Usually, in the structure of the bathroom, in order to lower the rising of the bathtub with respect to the washing place, the bathtub pan (20) in the waterproof pan (2) is a washing place pan (21).
It is placed in a state where it is dropped to a lower level.

Therefore, as shown in FIG.
1) is fixed with screws on the base (11). Of course, an adhesive may be used in combination. And the bathtub pan (20) is
Hanging is performed using the plurality of hanging hardware (71) hooked in 1). The hanging hardware (71) is a steel plate having a width of about 10 cm and a height of about 10 to 30 cm bent in a substantially Z-shaped cross section. In that case, the receiving wood (7) which framed the timber
Is suspended by the hanging hardware (71), and the bathtub pan (2)
0) is mounted on the receiving tree (7).

As described above, if the bathtub pan (20) is hung at a position lower than the washing pan (21) by using the base (11), the floor foundation work for the floor having a required strength can be separately performed. And it can be carried out at low cost even in existing buildings. Needless to say, when floor foundation work is performed as in the conventional construction, an appropriate base may be installed on the soil and the bathtub pan (20) may be placed thereon.

[0027] The waterproof pan (2) having a divided structure formed by FRP can be easily carried into a construction place even in a large bathroom of, for example, 5 m ² or more, and is arranged in the initial shape. It can be easily installed simply by screwing it to the connection part (22). In addition, since a predetermined gap is previously set between the bread constituent members (21a, 21b, 21c) of the divided waterproof pan (2), when the waterproof pan (2) is assembled on site, the waterproof pan (2) may The dimensional adjustment of the waterproof pan (2) can be further facilitated.

In another preferred embodiment of the present invention, a method for forming the waterproof pan (2) is shown in FIG. 1 in order to more easily adapt the waterproof pan (2) to the form of the bathroom.
As shown in FIG. 0, in forming the waterproof pan (2), after forming a flat bottom plate (23) constituting the bottom of the waterproof pan (2), a side plate (24) is formed along the periphery of the bottom plate (23). )
A method of forming a peripheral edge of the waterproof pan (2) by attaching the pan is provided. That is, a waterproof pan (2) is produced by combining plate-shaped members instead of integrally molding using a molding die.

In the above-mentioned forming method, first, a bottom plate (23) corresponding to the bottom of the waterproof pan (2) is cut out from a flat plate of a required thickness formed by FRP. Next, in order to form the periphery of the waterproof pan (2), the side plate (24) preformed in a substantially band shape is arranged on the periphery of the bottom plate (23) perpendicular to the surface direction of the bottom plate. Then, glass fibers are pressed against the back side of the periphery of the bottom plate (23) and the back side (inside) of the side plate (24) to overlay the bottom plate (23) and the back side of the side plate (24). An angle-shaped reinforcing member (25) integrated with these is formed at the corner. Note that FIG.
As shown in FIG. 11, the side plate (24) may have a flange (24g) formed by projecting the upper end outward to support the lower end of the base material of the apron (8) and the wall (4). .

A waterproof pan (2) having the structure shown in FIG.
As a molding method, the peripheral edge of the waterproof pan (2) was immediately formed by pressing and overlaying the peripheral edge of the bottom plate (23) with glass fibers previously formed into a thin mat as the side plate (24). Thereafter, a method of forming an angle-shaped reinforcing material (25) in the same manner as described above is used. Further, as a method for forming the waterproof pan (2) as shown in FIG. 8, the glass fiber constituting the side plate is arranged in the direction of expanding the bottom plate with respect to the peripheral edge of the bottom plate, and then the expanded portion is bent while overlaying. Then, there is a method of forming a rising edge of the waterproof pan (2).

The above-mentioned waterproof pan (2) can be installed similarly to the waterproof pan of FIG. As shown in FIG. 10, a molding method using a combination of planar materials such as a bottom plate (23) and a side plate (24), that is, a waterproof pan (2) in which a strip-shaped side plate (24) is attached to the periphery of the bottom plate (23). The molding method described above may be performed by drawing a desired shape on a plate material formed by FRP and cutting it, and since a molding die is not required at all, in particular, a large waterproof pan or a waterproof pan having a complex planar shape is further used. It can be formed efficiently.

Although not shown, the waterproof pan (2) shown in FIG. 10 may have a divided structure like the waterproof pan shown in FIG. 8, depending on the size. That is, after the completed waterproof pan (2) is divided into a plurality of parts, the same connection parts as described above are formed to connect the divided members. Further, when the waterproof pan (2) shown in FIG. 10 has a divided structure, the bottom plate (23) may be divided before forming the periphery of the waterproof pan (2), and then the periphery may be formed. As the side plate (24) to be attached to the peripheral edge of the bottom plate (23), a bent plate for attaching to the corner of the bottom plate (23) may be manufactured in advance.

As steps after the installation of the waterproof pan (2), the deck (3) is constructed as shown in FIG. 2, and the interior of the bathroom is constructed and the bathtub is constructed as shown in FIGS. (5) is installed. In such construction, first, the deck (3) is constructed. The deck (3) illustrated in the figure has a structure provided with a counter. Base material of deck (3) (3
0) can be made of an appropriate material having excellent water resistance and load resistance, but is usually made of an FRP molded plate. The base material (30) of the deck (3) is supported by using a frame (6) (partially shown in FIG. 7) made of a shape steel such as an angle, and columns (12) and studs (13) of a building. As shown in FIG. 7, the frame (6) is built inside, for example, the bathtub pan (20) installed earlier.

Next, piping for hot water supply, water supply and drainage is constructed. Although not shown, in the piping work, piping for water supply and piping for circulation leading to the heating equipment are drawn out from the wall (4) on the skeleton side. Further, the drain pipe connected to the bathtub (5) is set up in the bathtub pan (10), and the drain pipe is connected to the drain of the washing pan (21). In that case, in the bathroom structure illustrated in FIG. 7, the bathtub (5) to be installed is installed at a position sufficiently away from the wall (4) on the skeleton side below the deck (3). Construction space can be secured.
In addition to the plumbing work, wiring work for electrical appliances and equipment necessary for lighting in the bathroom, etc. will be performed.

After the foundation of the deck (3) has been constructed, FIG.
As shown in (1), the interior of the bathroom, that is, the base of the wall (4) and the ceiling (not shown) is installed. As the base plate (40) (base material) for the wall (4) and the ceiling, a plywood having a thickness of about 6 to 9 mm, an inorganic molded plate such as a calcium silicate plate, and various fiber plates are used. The base plate (40) is fixed to the pillars (12), studs (13), and ceiling margins (not shown) of the building with nails and adhesive, and the base plate (40) will be described later. It functions as a reinforcing material when a composite plate (composite material) (41) is used together.

Subsequently, as shown in FIG. 4, a specific composite board (41) is further provided on the surface of the base board (40) as a second base material in order to enhance the waterproofness and heat insulation of the wall (4) and the ceiling. ). That is, in a preferred embodiment of the construction method of the present invention, a plate-like composite plate (41) formed by laminating metal sheets on both sides of a synthetic resin sheet is used for constructing the interior base of a bathroom.

The specific structure of the composite plate (41) is as follows. As a core material of the composite plate (41), that is, a synthetic resin sheet, specifically, a thermoplastic resin such as polyolefin such as polyethylene and polypropylene, polyvinyl chloride, and polyamide is used. Of course, a thermosetting resin may be used. The synthetic resin sheet made of the above materials is
It is formed to a thickness of about 1 to 6 mm. On the other hand, various metals or alloys can be used as the metal sheet, but usually, an aluminum sheet is used. The aluminum sheet has a thickness of about 0.1 to 1.0 mm, usually about 0.3 to 0.5 mm, in consideration of strength, weight, and workability.

Each metal sheet is provided in a state of being sufficiently adhered to the synthetic resin sheet using an adhesive or the like. As the adhesive, ethylene-acrylic acid copolymer, ethylene-vinyl acetate copolymer, ethylene-glycidyl acrylate copolymer, ethylene-maleic anhydride copolymer,
Examples include graft-modified unsaturated carboxylic acids of polyolefins (such as polyethylene) or anhydrides thereof.
The adhesive is usually used by being laminated as an adhesive film on the surface of the synthetic resin sheet, but may be used by being compounded with the synthetic resin sheet. The composite plate (41) is manufactured by superposing a metal sheet on both sides of a synthetic resin sheet extruded by melt and passing the sheet between rotating rolls.

As the composite plate (41) as described above, for example, a product "Alpolic" manufactured by Mitsubishi Chemical Corporation can be mentioned. This product is a composite plate in which a metal plate (for example, an aluminum plate) is adhesively bonded to both surfaces of a thermoplastic resin plate (for example, a polyethylene plate), and is widely used in various fields including the building materials field.

Since the composite board (41) as a base material is excellent in heat insulation and water stopping property due to the above configuration, in the construction of the present invention, as shown in FIG.
1) is built inside the raised edge of the waterproof pan (2) or the raised edge of the deck (3). As a result, water staying in the deck (3) or the waterproof pan (2) does not leak to the skeleton side, and the base plate (40) that is first stuck to maintain rigidity is moistened. It can be effectively prevented. The composite plate (41) is fixed to the surface of the base plate (40) using an adhesive and a nail together. FIG. 5 shows a state in which the composite board (41) is applied. The joints of the composite board (41) constituting the interior base are sufficiently waterproofed by using a butyl tape to cover the joints. Can be retained.

As shown in FIG. 5, after the foundation of the wall (4) and the ceiling is installed, the bathtub (5) is inserted through an opening provided in the deck (3) in advance, and the bathtub pan is inserted. (20)
Install on top. Then, the necessary water supply and hot water supply pipes are connected to the bathtub (5). As the bathtub (5), an arbitrary bathtub such as a wooden bathtub can be selected in addition to various types of bathtubs produced by the FRP molding method as described above.

For example, as a bathtub produced by the FRP molding method, a vinyl ester-based resin layer constituting an intermediate layer and a general-purpose resin layer containing a reinforcing fiber constituting an outer layer are provided outside a gel coat resin layer constituting an inner layer. After forming a gel coat resin coating film on the bathtub formed by sequentially laminating, and further on the convex surface, a wet coating is formed on the outside of the gel coat resin coating film.
A bathtub made by backing and curing a vinyl ester-based resin coating under on-wet conditions, and then forming and curing a general-purpose resin layer containing reinforcing fibers on the surface of the cured vinyl ester-based resin layer. And various bathtubs in consideration of heat resistance, heat retention and moldability.

Further, as shown in FIG. 5, after installing the bathtub (5), an apron (8) is formed on the front surface (waist portion) of the deck (3) using a specific material. In a preferred embodiment of the construction method of the present invention, in order to enhance the heat insulation of the bathroom and the waterproofness to the underfloor structure, the apron (8) attached to the front of the bathtub (5) is constructed on both sides of the synthetic resin sheet. Composite board (8
Use 2). That is, the apron (8) is made of the same material as the composite plate (41). Usually, the composite board (82) is used as a base material for the apron (8). As shown in FIG. 7, in order to prevent water leakage from the washing pan (21), the composite plate (82) is also built inside the washing pan (21) when it is constructed.

Next, as shown in FIGS. 6 and 7, finishing work is performed on the wall (4), ceiling, floor (1), deck (3) and apron (8). On the wall (4) and the ceiling, an appropriate finishing material (43) for the wall, for example, a ceramic tile, a natural stone tile, a resin tile, a plywood plywood, or the like is attached to the composite board (41) previously constructed. The wall material (43) is stuck with an adhesive, and the joint is formed by casting an inorganic joint material such as cement, a silicone-based, or a porosulphide-based sealing material as usual.

The floor (1), ie, the surface of the washing pan (21), the surface of the deck (3), the apron (8)
The finishing materials (16, 35, 84) such as the above-mentioned various tiles are also attached to the surface of the composite board (82), and the same jointing material is cast on the joints. . And FIG.
When the finishing material (16) is attached to the washing pan (21) as shown in FIG.
The gap between 1) and the finishing material (16) is preferably sufficiently sealed with an adhesive.

As described above, in the bathroom construction method according to the present invention, a waterproof pan (2) made of FRP preformed based on the plan of the bathroom is used as the waterproof pan. ) On top to build bathroom equipment
It can exhibit the excellent water stopping function of the unit bath and satisfy the freedom of design in the bathroom of the conventional construction method. That is, according to the construction method of the present invention, a bathroom with excellent waterproof reliability can be constructed by dry construction, and
Even wooden structures can be built on the upper floor. Moreover, as in the conventional construction method, it can be constructed in a free form and in a free size.

Further, the bathroom structure of the present invention is constructed by the above-mentioned construction method, and the waterproof pan (2) made of FRP preformed based on the plan of the bathroom.
Can reliably exhibit the water stopping function regardless of the form of the underfloor structure portion, and allow free construction inside the bathroom.

The present invention can be applied not only to a bathroom in a detached wooden house but also to a bathroom in a concrete apartment house. Further, the present invention can be applied to various bathrooms such as a common bathroom, a safe bathroom attended by a caregiver, and a relatively small shared bathroom.

[0049]

As described above, according to the present invention, it is possible to use a waterproof pan made of FRP preformed based on a plan of a bathroom and to construct bathroom facilities on the waterproof pan. In addition, a bathroom with excellent waterproof reliability can be constructed by dry construction, so that even a wooden building can be constructed on the upper floor. Moreover, as in the conventional construction method, it can be constructed in a free form and in a free size.

[Brief description of the drawings]

FIG. 1 is a diagram showing a foundation structure of a building before construction.

FIG. 2 is a view showing construction of a waterproof pan and a deck.

FIG. 3 is a view showing construction of a base plate of a wall.

FIG. 4 is a diagram showing the construction of a composite board for wall foundation.

FIG. 5 is a view showing construction of a bathtub and an apron.

FIG. 6 is a diagram showing finishing work.

FIG. 7 is a longitudinal sectional view showing the arrangement of the waterproof pan and the connection between the waterproof pan and a wall.

FIG. 8 is a perspective view showing a method of forming a waterproof pan.

9 is a longitudinal sectional view showing a structure of a connection portion of the waterproof pan of FIG. 8;

FIG. 10 is a perspective view showing another embodiment of a method for forming a waterproof pan.

11 is a longitudinal sectional view showing a structure of a peripheral portion of the waterproof pan of FIG.

[Explanation of symbols]

 1: Floor 16: Finishing material 2: Waterproof pan 20: Bath pan 21: Washing pan 21a: Bread constituent member 21b: Bread constituent member 21c: Bread constituent member 22: Connection part 23: Bottom plate 24: Side plate 3: Deck 30: Base Material 35: Finishing material 4: Wall 40: Base plate 41: Composite plate (base material) 43: Finishing material 8: Apron 82: Composite plate (base material) 84: Finishing material 5: Bathtub

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tomoyuki Kamiyachi 1-26 Kita, Hondori, Shiroishi-ku, Sapporo-shi, Hokkaido Emoto Kogyo Co., Ltd.

Claims (6)

[Claims] 1. A method for constructing a bathroom, comprising the steps of: installing a waterproof pan in a underfloor structure of a building; and installing a deck and interior of a bathroom and installing a bathtub. FRP preformed based on plan
A method for constructing a bathroom, comprising using a waterproof pan made of water. 2. In forming a waterproof pan, the formed pan is divided into two or more in its planar shape, and each divided member is substantially butted to an initial state.
By applying a release tape along the divided edge of one member of both butted members, and by hand lay-up molding along the divided edge of both members. The construction method according to claim 1, wherein an integrated connecting portion is formed along the divided edge of the other member. 3. The method according to claim 2, wherein a gap of 1 to 10 mm is provided between both divided members when the divided members are brought into an initial state. 4. When forming a waterproof pan, a peripheral edge of the waterproof pan is formed by forming a flat bottom plate constituting a bottom portion of the waterproof pan, and then attaching a side plate along a peripheral edge of the bottom plate. The construction method according to any one of Items 1 to 3. 5. The construction method according to claim 1, wherein a composite plate formed by laminating a metal sheet on both sides of a synthetic resin sheet is used to construct an interior base of a bathroom. 6. A bathroom structure constructed by the construction method according to any one of claims 1 to 5.